Secondary or storage battery.



' B. FORD. SECONDARY 0R STORAGE BATTERY.

APPLICATION FILED DEC. 29, 1911.

Patented Jul 29, 1913.

iv. in

wood or like separators and positive pole- NITED Sam's r BRUCE noun, or PHILADELPHIA, iBENNSYL VANIA;

Specification of Letters iatent.

sncoiinnax on sroneen' BATTERY.

Patented July 29, i913.

Application filed December 29, 1911, Serial No. 668,479.

To all whom it may concern:

Be it"known that I, BRUOE FORD, a citizen of the United. States, and a resident of Philadelphia, in the county of Philadel- 5 phia and State of Pennsylvania, have in:

vented certain new and useful Improvements in Secondary or Storage Batteries,

of which the following is ajspecification.

The present invention relates to batteries which use-is made of negative pole plates,

lates, which include a metallic bottom rame having rods surrounded by appropriate tubes which confine the activema- 5 teriali or material to become active and the provements in the invention is concerned principally with impositivepole plates and in their cooperation with the negative pole plates. T

The object of the present inyentionis to prevent short circuits betweenf the positive and negative pole plates. The invention will be claimedat the end hereof, but will be first described in connec- 'tion .with the accompanying drawings, forming part hereof, and in which- Figure 1, is a side view of a positive pole plate embodying features of the invention.

Fig. 2, is aftransverse sectional view taken on the line 2- -2 of Fig. 1, and Fig. 3, is a diagrammatic view illustrative of the operation of the invention.

1 is a plate usually used as a positive pole plate and it includes a bottom conducting frame 52 having conducting rods 3 and permcahle insnlatingtubes 4 between which and the rods active material or material tobecome active 5.- is arranged.

. tom frame to form 6, areribs projecting laterally from the tubes. r I

7, is a laterally extending insulating sheet, as of hard rubber, overlying the bottom frame 2 and closing the lower ends of the tubes 4 and terminating insideofthe ribs 6.

jections to afford space through which sediment may fall.

' 2. The combination plate of insulating tubes provided with laterally extending spacing ribs, a bottom frame, and an insulating cover applied to the top ofthe'bottom frame and extendinglaterally'beyond the minating inside of, as described.

bottom frame and tersaid ribs, substantially signed my name.

' BRUCE FORD.

Witnesses:

S. E."PA1T]1JRSON, I FRANK E. FRENCH.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. W

wood, should break.

in a'storage battery I In testimonywhereof I have hereunto 

